Good Resource for additional Spam Blocking

7 msg	Invalid Sender Address syntax
2 msg	high availability
2 msg	BFD (Brute Force Detection) & Postfix
5 msg	relay domain and forwarding
2 msg	dk-milter - emal size issues
5 msg	Mail sent from local machine shows undisclosed-...
16 msg	Sorting incoming mails according to rules
5 msg	Correct use of smtpd_tls_security_level
1 msg	graph queue sizes
6 msg	large deferred queue ('too many connections')
3 msg	To see IP's
5 msg	How Can I Block certain IP's Within Range of my...
8 msg	Question about adding a special header to emails
3 msg	rcpt count mismatch and corrupt queue file ?
2 msg	too many connections
11 msg	Whitelist broken email servers?
4 msg	Write failed in network_biopair_interop with er...
2 msg	Pattern-matching in HELO
3 msg	header_checks du jour

Good Resource for additional Spam Blocking
\ Joey (15 Jun 2007)
. \ Joey (15 Jun 2007)
. \ Victor Duchovni (15 Jun 2007)

Subject:	Good Resource for additional Spam Blocking
Group:	Postfix-users
From:	Joey
Date:	15 Jun 2007

We are not a BIG isp, so this is a good number from my perspective. To give
you an idea in April 07 we blocked the following amounts of spam with RBL's
on 1 server:

blocked using bl.spamcop.net (total: 12087)

blocked using dnsbl.ahbl.org (total: 265)

blocked using dnsbl.njabl.org (total: 2379)

blocked using dsn.rfc-ignorant.org (total: 1181)

blocked using dul.dnsbl.sorbs.net (total: 11488)

blocked using list.dsbl.org (total: 1065)

blocked using spamsources.fabel.dk (total: 403)

blocked using zen.spamhaus.org (total: 219101)

I can say that this has worked very well blocking a pretty good amount of
spam with NO false positives as of yet, and would highly recommend it.

On the flip side if anyone has additional ideas, please let me know since
you can NEVER block enough spam!

Thanks and hope this works for you!

Joey